Electric connecter



Dec. 9, 1924- J. S. JONES ELECTRICAL CONNEGTER Filed Oct. 9, 1 22 [N VENTOR gym (1 gmw z WMzi/w A TTORNE y:

we 17 o Patented Dec. 9, 192%, li,.l sii,il i? nnnornio NNEC'EEE.

Application files ,Qcioher e, 332%. Serislfio. 59,2 ,272.

T all whom it may concern: 7 The plug in u pref-erred form, illus- Be itknown that l, ilossrn S. Jones, tinted, consists of two principalnortions: s. citizen of the United States, and resident composite partA, built upon 1-: piste New York, in the countyof New York and or base1, and comprising the met-sills (301% 6 btate of New York, have invencedcertain ducting and contact members the plug new and useful Improvementsin Electrical with their necessary insulating elements, and Connecters,of which the following is a the wire-terminal sockets or iihunecterghndspecification. a housing, insulating and hani ile pert My inventionrelates to electrical connec- The base-plate i has s screw-lhreml Q'enso ters of the class generally known as plugs, gaging an internal threadin one end of and more particularly to plugs which are housing Ii, and.a knurled flange 3 which especially well adapted to use in telephoneengages the end of the housing; wall and switchboard circuits, wirelesstelephone and forms a, graspinpelement of substantial ditelegraphapparatus and for various other anicter for inserting and removing partA 15 purposes.x as a unit.

The general object of the invention is to A contact sleeve 4- isinserted in a, central provide a plug of strong, eompuctysimple apertureinthe base i and secured in any 4 and economical construction. suitableway, as by screwing or rivetin A more particular object is to arrangethe An insulating sleeve 5 is located in contact 2 parts so that boredcircuitwrires may be eassleeve 4, and 2, metal conducting and con- 25 ofthe plug.

ily connected to the plug terminals without necting stem 6 passesthrough ineinsulating the necessity for looping thetwire ends, or sleeveand at its outer end is screwed into spade or pin wire terminals me bejust a contact knob T, and at its inner end IS as readily connectedWithonhmo ification screwed into a metal terminal bushing "8, which isa, fist piece of generally oblong A further object is to improve the oneform with rounded ones. An insulator 9, chanical structure of plugs incertain which may be substantially the same shape details assufficiently explained hereafter. as the bushing S, is placed betweenthe bush- The accompanying drawings show certain ing and the base 1, andan insulating washer so exemplifyin structures embodying the in- 10 islocated between the contact. knob T and vention. A ter considering};these, persons the ends of the sleeves 4 and (hie termiskilled in theart will understand that modinal post 11 is sccuredtobushing 8,desirably 'fications may be made without departing in the present caseby providing the post from the principles of the invention, and I with asmall stem 12 passing through a hole 5 do not limit myself todeteilsexcept as in the bushing and'sccured by upsetting the claimed.end. Another terminal posl; 13 has n longer In the drawings: stem 14assing through a hole in base 1 and Figure 1 IS a longitudinal sectionof a secured y upsetting. Post 13 1S insulated lug embodvin theinvention in one form b washers 15 16 and 17. A hole 18 is 0 P y g 1 y 1a about twice the usual size in order to show bored axially in each ofthe terminal posts,

smallparts clearly. and another hole 19 is bored transversely Figure 2is a transverse section at 2-2, through each post intersecting the hole18, lg. 1. and each hole 19 is screw-threaded at one Figures 3 and 4 aredetail views showing side of the longitudinal hole to receive a foradaptability of the device to different styles minel screw 20. The postsare set so that of conductor-terminals. the axes of the screws aresubstantially par- Figure 5 is a detail View of a modificanllel, as bestshown in Fig. 2. and in this way lion providing a cord anchor. thescrews may he mode of suitable size and Figure 6 shows the general modeof malength, and are easily accommodated withnipulating the 'plug inattaching it to circuit in a casing B of moderate diameter.

wires. The casing B desirably has a longitudinal 'tions A of the plugare so compact in the lengthwise direction that a chamber 22 of amplesize may be provided without making the-casing of undue length, or infact, any longer than is desirable for convenient handling. At the endremote from the terminal posts the casing has an end .wall 23 with anaperture 24 of suitable size to accommodate the conductor cable. r

In some cases the bushing 8 is provided, as best shown in Fig. 5, with alateral enlargement 25 having a perforation 26 to serve as a conductorcord anchor.

In connecting the plug to a conductor cable the main portions of theplug are separated, asshown in Fig. 6, and the cable C is passed throughaperture 24; the cable fabric or casing is cut away to expose theseparate insulated conductors C C andthe insulation of the individualconductors or wires w is removed, and the bare wire ends may then beinserted directly into the longitudinal post holes 18 without thenecessity of looping the wire ends or providing them with any specialform of terminal. T he Wire ends are then securely clamped by setting upthe screws 20, and a very firm mechanical grip and electrical contact isobtained by the tendency of the screw ends to deform the Wires and pressthem into outward portions of the transverse holes 19.

Otherwise, the individual wires may be provided with spade or eyeterminals e, Fig. 3, which may be connected by inserting the screwshanks through the terminals and clamping them against sides of theposts, or the individual wires may have pin termi: nals p which may beinserted in the longitudinal holes 18 and clamped in an obvious way, asindicated in Fig. 4. p

The cable may be provided with a cord 8 tied to the cable at s, and thiscord may be cut to a suitable lcngtlrand inserted and tied in the anchorhole 26, as sutlicicntly shown in Fig. 6. i

The casing or handle B is then slid down over the Wire ends and screwedon to the base 1, whereupon the plug'is ready for use.

By thedescribed construction and arrangement of parts the cableconnections niay be very quickly and easily made or changed.

I claim:

1. A plug for electrical circuits comprising a substantially cylindricalhandle and easingmember having a wall at one end apertured to admit acable, and an internal thread at'the other end, a metal base memberscrewed into the threaded end of the handle,

a contact sleeve secured in a central aperture in the base, a contactknob at the end of the sleeve and insulated therefrom, a stem passingthrough the sleeve and insulated therefrom and secured to the contactknob, an insulator on the inner face of the base, a metal terminalbushing on said insulator and connected to the inward end of said stem,a metal terminal post secured to said bushing, another metal terminalpost insulated from the bushing and provided witha stem passing throughthe bushing and secured to the base, the posts extending substantiallyparallel within thehandle member, the posts having longitudinal holesextending inward from their free ends and terminal screws in; serted inthe posts and arranged substantially parallel with their heads inopposite directions and with the screw ends arranged to intersect thelongitudinal holes to-secuie wire ends or pin terminals.

2. A plug for electrical circuits comprising a substantially cylindricalhandle and easing member having anv'all at one end 'apertured to admita. cable, and an internal thread at the other end, a metal base memberscrewed into the threaded end of the handle, a contact sleeve secured ina central aperture in the base, a contact knob at the end of the sleeveand insulated therefrom, a stem passing through the sleeve and insulatedtherefrom and secured to the contact knob, an insulator on the innerface of the base, a metal terminal bushing on said insulator andconnected to the inward end of .said stem, a metal terminal post securedto said bushing, another metal terminal post insulated from the bushingand provided with a stem passing through the bushing and a secured tothe base, posts extendingsub stantially parallel within the handle memher, the posts having axial holes extending inward from their free endsand also having transverse holes arranged substantially parallel, andterminal screws inserted in the transverse holes, the terminal post andscrew arrangement permitting the'comiection of various forms ofconductorterminals.

3. A. two-conductor electrical plug connecter, the parts constitutinga'main insulating' handle and-an assembled plug connection, said handlebeing a solid of revolu-, tion and being so formedas to accommodate theconnecting wires in'one end and the electrical plug assemblyin' theother, which electrical plug assembly is in part composed of a threadedsleeve contact engaging'the said insulating handle, which contact sleeveis a solid of revolution, 'an'd"drilled to accommodate an insulatingcylindrical'sleeve, which insulating sleeve is so constructed as toreach from the extreme outer endi'otthe Ill) contact sleeve in front toa point'a'shortdistance behind the rear face of the contact sleeve is ametallic member constituting part of the tip conned ion, which consistsof a fiat disc-like lnQllllKl'. :1 shaft fixed to said momher. the.member being: drilled in (me loca tion to receive :1 binding postconnection, and drilled in another to zu-con'ln'mclate an insulatingbushing! W'llllP the shaftis threaded to accommodate the metallic tipand an insulat'ing washer.

Signed at New York in the vounty of New York and State of New York this4th day (ff ()vtolver A. D. 1922.

JOSEPH STANSBURY JONES.

